This year's challenge for Red Bull's DIY showdown in Brooklyn: Build a bizarre musical instrument. Here's how six hackerspaces accepted the challenge.

Signal to Noise

Signal to Noise

Contestants in this year's Red Bull Creation had 72 hours to design and build an instrument. Many teams went into the competition with little to no musical knowledge, often phoning relatives and friends for advice and late-night crash courses in music theory.

I3 Detroit

I3 Detroit

I3 Detroit won the Team's Choice award with its instrument, the Whirly Turbulator, inspired by whirly tubes (those corrugated plastic tubes that make noise when you spin them quickly.) Here is one of their early prototypes.